Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 338 for “"Helicopter"”.
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Helicopter configuration optimization
Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, February 2001.
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Modeling the Impact of Helicopter Vibrations on the Musculoskeletal Health of US Army Blackhawk Helicopter Pilots
… Control System (AVCS) on reducing the impact of helicopter vibrations on musculoskeletal health. Computational analyses of a biomechanical model using OpenSim and motion capture at varying levels of vibration was conducted. This quantifies the response of the spine and the surrounding muscles …
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Electronics design for an autonomous helicopter
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Helicopter final assembly critical path analysis
Helicopter final assembly involves the installation of hundreds of components into the aircraft and takes thousands of man-hours. Meeting production targets such as total build days and total aircraft man-hours can be difficult when faced with challenges related to parts, workforce, and scheduling. …
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Control primitives for fast helicopter maneuvers
… using dynamic movement primitives (DMP) for helicopters. Our ultimate goal is to combine these DMPs to generate new primitives and demonstrate them on a 3-DOF (3 Degrees of Freedom) helicopter. An observed movement is approximated and regenerated using DMP methods. After learning the movement …
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Piezoelectric actuators for helicopter rotor control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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The helicopter innovation in Army aviation
… in United States Army aviation centered on the helicopter. The theories of strategic threat, civilian intervention, and inter service rivalry were applied to the innovations of air mobility, the anti-tank helicopter, and recent developments in Army doctrinal thought. This study found that while …
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Constrained Control of Complex Helicopter Models
Complex helicopter models that include effects typically ignored in control models, such as an analytical formulation for fuselage aerodynamics, blade lead-lagging and flexibility, and tail rotor aerodynamics, are derived. The landing gear, horizontal tailplane, a fully articulated main rotor, main …
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Improving Helicopter Yarding with Onboard GPS
Despite its relatively high cost, helicopter yarding has become a common means of timber extraction where site sensitivity, access, or regulations limit the use of less costly alternatives. The high costs associated with helicopter yarding, as well as the desire to expand the application of this …
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Aerodynamic Trade Study of Compound Helicopter Concepts
… relative performance attributes of compound helicopter concepts have been examined, including their potential for meeting the requirements of several challenging mission profiles. For each concept, which included lift and/or propulsive compounding, a suite of aerodynamic performance models …
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Developing computational intelligence for helicopter flights control.
… is to develop computational intelligence for helicopter flights control, a system that learns to fly a helicopter in the way a human pilot would. The work is being carried out because of increased pilots’ workloads and the reward in terms of cost and safety, in a dangerous flight mission. The …
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Learning control applied to a model helicopter
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Blade mounted actuation for helicopter rotor control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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A mapping system for an autonomous helicopter
… years. I would like to thank the members of the helicopter team, who have greatly influenced my development as an engineer: Paul Debitetto, Christian Trott, Bob Butler, Long Phan, Mike Piedmonte, and Anthony Lorusso. Special thanks goes to Paul Debitetto for his thoughtful critiquing and …
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Rotor hub for a commercial ramjet helicopter
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1954.
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Helicopter noise experiments in an urban environment.
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1973
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An aggregate planning model for helicopter assembly
Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management, 1997.
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